%0 Journal Article
%T A terrestrial planet candidate in a temperate orbit around Proxima Centauri
%+ Queen Mary University of London (QMUL)
%+ Instituto de Astrofísica de Andalucía (IAA)
%+ The Open University [Milton Keynes] (OU)
%+ Department of Terrestrial Magnetism [Carnegie Institution]
%+ Astroimagen
%+ Institut für Astrophysik [Göttingen]
%+ McDonald Observatory
%+ Universidad de Chile = University of Chile [Santiago] (UCHILE)
%+ University of Hertfordshire [Hatfield] (UH)
%+ University of Warsaw (UW)
%+ Max-Planck-Institut für Astronomie (MPIA)
%+ Laboratoire Univers et Particules de Montpellier (LUPM)
%+ Weizmann Institute of Science [Rehovot, Israël]
%+ Astronomisches Rechen-Institut
%A Anglada-Escudé, Guillem
%A Amado, Pedro
%A Barnes, John
%A Berdiñas, Zaira
%A Butler, R. Paul
%A Coleman, Gavin
%A de La Cueva, Ignacio
%A Dreizler, Stefan
%A Endl, Michael
%A Giesers, Benjamin
%A Jeffers, Sandra, V.
%A Jenkins, James, T.
%A Jones, Hugh, R A
%A Kiraga, Marcin
%A Kürster, Martin
%A López-González, María, J
%A Marvin, Christopher, J
%A Morales, Nicolás
%A Morin, Julien
%A Nelson, Richard, P.
%A Ortiz, José, L
%A Ofir, Aviv
%A Paardekooper, Sijme-Jan
%A Reiners, Ansgar
%A Rodríguez, Eloy
%A Rodríguez-López, Cristina
%A Sarmiento, Luis, F
%A Strachan, John, P
%A Tsapras, Yiannis
%A Tuomi, Mikko
%A Zechmeister, Mathias
%< avec comité de lecture
%@ 0028-0836
%J Nature
%I Nature Publishing Group
%V 536
%N 7617
%P 437-440
%8 2016
%D 2016
%R 10.1038/nature19106
%Z Sciences of the Universe [physics]/Astrophysics [astro-ph]/Earth and Planetary Astrophysics [astro-ph.EP]
%Z Sciences of the Universe [physics]/Astrophysics [astro-ph]/Solar and Stellar Astrophysics [astro-ph.SR]Journal articles
%X At a distance of 1.295 parsecs , the red dwarf Proxima Centauri (α Centauri C, GL 551, HIP 70890 or simply Proxima) is the Sun's closest stellar neighbour and one of the best-studied low-mass stars. It has an effective temperature of only around 3,050 kelvin, a luminosity of 0.15 per cent of that of the Sun, a measured radius of 14 per cent of the radius of the Sun and a mass of about 12 per cent of the mass of the Sun. Although Proxima is considered a moderately active star, its rotation period is about 83 days (ref. 3) and its quiescent activity levels and X-ray luminosity are comparable to those of the Sun. Here we report observations that reveal the presence of a small planet with a minimum mass of about 1.3 Earth masses orbiting Proxima with a period of approximately 11.2 days at a semi-major-axis distance of around 0.05 astronomical units. Its equilibrium temperature is within the range where water could be liquid on its surface.
%G English
%2 https://hal.science/hal-01769753/document
%2 https://hal.science/hal-01769753/file/1609.03449.pdf
%L hal-01769753
%U https://hal.science/hal-01769753
%~ IN2P3
%~ CNRS
%~ LUPM
%~ UNIV-MONTPELLIER
%~ LUPM_AS
%~ UM-2015-2021